Let's cook.
In a medium bowl, combine the shredded or diced cooked chicken breast and diced avocado.
In a small separate bowl, whisk together the mayonnaise, fresh lime juice, garlic powder, salt, and black pepper until well combined.
Pour the dressing over the chicken and avocado mixture. Gently stir until everything is evenly coated.
Lay each large flour tortilla flat. Divide the chicken and avocado mixture evenly between the two tortillas, placing it slightly off-center.
Top the chicken mixture with shredded lettuce.
Fold in the sides of each tortilla, then tightly roll it up from the bottom to create a wrap.
Serve immediately or wrap tightly in plastic for later.
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